| 摘要 |
A metals tolerant FCC catalyst system is disclosed comprising in admixture an LZ-210 type molecular sieve component and a bastnasite-type rare earth component dispersed in a large pore matrix containing substantial amounts of a large pore, low surface area alumina. Such catalysts find particular utility in the catalytic cracking of heavy feeds and/or residual oils where high levels of metals, particularly of vanadium and nickel, are present in amounts which normally would be detrimental. |
